I’m assuming what he’s referring to is the “Junia” who is mentioned in Romans 16:7. Some ancient codices, however, read “Junias” rather than “Junia.” So, it is a matter of debate whether this person is a man or a woman. It could easily be either one. But, even if it is a woman, so what? She is not called a “fellow apostle”. What we know from the text is that this “Junia” is paired with “Andronicus,” who is listed before “her”. We are also told that Andronicus and “Junia” are St. Paul’s “relatives” and that they were Christians “before” St. Paul was.

The natural conclusion here is that “Junia” (if it is “Junia”) was Andronics’ wife, and they were “prominent among (or before) the apostles” in one of two senses: 1) Either they were regarded as a “husband and wife team” (with Andronicus being the primary figure as an evangelist, i.e., women were not permitted to preach publicly or have authority over a man); in this they would have been no different than Aquila and his aristocratic Roman wife Priscilla, who are likewise always paired together, and mentioned in this same Epistle to the Romans only a few verses earlier (Romans 16:3), where they together are called Paul’s “co-workers” – and this by a Paul who does not permit women to preach.

Or possibility 2), “prominent among (or before) the Apostles” can mean that Andronicus and “Junia” were held in high esteem among the Twelve, just as Priscilla and Aquila were “prominent” among the disciples of Paul. This would make sense if they were “in Christ before [Paul],” since that would mean that they were early members of the Jerusalem church, and probably the Apostles’ first emissaries to the Jews of Rome, if not among the very Roman Jews who were converted on the day of Pentecost (see Acts 2:9-10, where Roman Jewish pilgrims are mentioned). Paul, of course, was a Roman citizen, and so it would make sense for his relative Andronicus and his wife Junia (if it is a woman) to be Roman citizens as well, and so residents of Rome.

So, there is no “feminist super-hero” to be found in this verse.